Rotaeno (2022)

Rotate an Android phone or iPhone while your thumbs handle the notes, making the screen itself part of the instrument. The turns give a phrase a physical shape that ordinary lane tapping misses. A compatible gyroscope or accelerometer is required; this is a game to hold, rather than leave flat on a desk. Try its calibration and a manageable chart before committing to rapid spins. Extra music purchases are separate from the base app, and repeated wrist movement can make short sessions the better introduction.